Wende Huang

TL;DR: In this article, a method for preparing high-whiteness nanometer calcium carbonate special for silicone sealant by utilizing low-grade limestone by a wet method is presented.

TL;DR: In this article, a method for the preparation of nanometer calcium carbonate for water-soluble ink by a wet method is described, which is characterized in that the calcium oxide undergoes slaking in the gyratory slaker and first aging, is added with a crystal control agent, undergoes second aging after undergoing first bubbling carbonation and was added with material looseness modifier and a surface treatment agent to carry out second modification.

TL;DR: In this paper, a method for preparing superfine activated nano calcium carbonate by utilization of low-grade lime is presented, which adopts the technical proposal that: firstly, the low grade lime is calcined and crushed so as to prepare calcium oxide; secondly, staged sieving is performed, namely a part of high-quality calcium oxide enters into the next procedure for producing calcium hydroxide and calcium carbonates; and thirdly the product is prepared after incineration through an incinerator, heat-insulated aging, bubbling carbonization, secondary aging, wet

TL;DR: In this paper, a method for preparing superfine activated nano calcium carbonate by utilization of low-grade lime is presented, which adopts the technical proposal that: firstly, the low grade lime is calcined and crushed so as to prepare calcium oxide; secondly, staged sieving is performed, namely a part of low quality calcium oxide is grinded into intermediate-grade calcium oxide products through a high-speed kneader or a ring roll, another part of high-quality calcium oxide enters into the next procedure for producing calcium hydroxide and calcium carbonates,

TL;DR: In this article, a method for preparing calcium sulfate whiskers through waste residue generated in the production process of calcium carbonate is described, which includes the following steps: screening the waste residue in the process of calcine carbonate; feeding the screened mixture to a crusher so as to crush the mixture into fine powder; adding water, soluble magnesium salt promoter, the fine powder and the concentrated sulphuric acid into a stainless-steel reaction kettle, stirring the mixture so that to prepare a pulp with the PH value of 8-10; sieving the pulp with a